The book is a collection of important speeches at the "Large-scale Symposium to Commemorate the 40th Anniversary of Reform and Opening Up and the 40th Anniversary of the Revival of Economic Dynamics". Experts and scholars extended their vision to the systematic summary of the basic trajectory, basic experience and basic laws of the 40 years of reform and opening up from many aspects, such as the major topics facing Chinese economic research and their research status, the theoretical interpretation and policy choices of China's high-quality economic development, and how to promote the high-quality development of China's economy.